Incandescent-mantle holder.



1. I. ROBIN. INCANDESGENT MANTLE HOLDER.

APPLICATION FILED APR. I2. 19!]- 1,259,557. Patented Mar. 19, 1918.

JACOB I. ROBIN, OF NEW YORK, N. Y.

INCANDESCENT-MANTLE HOLDER.

Specification of Letters Patent.

Patented Mar. 1a, 1918.

Application filed April 12, 1917. Serial No. 161,428.

To all whom it may concern:

Be it known that I, JACOB I. ROBIN, a citizen of the United States, anda resident of the borough of Manhattan, in the city and State of NewYork, have invented certain new and useful Improvements inIneandescent-lvlantle Holders, of which the following is a descriptionin such full, clear, and exact terms as will enable any person skilledin the art to which it pertains to make and use the same.

My invention relates to those mantle holders which are adapted to besecured on or otherwise tightly fitted to the mouth piece of the Bunsenburner, and intended particularly for use in connection with invertedmantles.

The invention, however, is not necessarily so limited and residesprimarily in the structure of the mantle carrying ring.

An important object of the invention is to secure a certain amount ofauxiliary air at the mouth piece of the burner, that is to say, air inaddition to that entrained at the Bunsen and that which is absorbed bythe incandescent flame playing at the surface of the mantle.

The invention is useful in connection with mantles, particularlyinverted mantles of various forms and especially inverted mantles of therag or limp type which are usu ally constructed small with ceramic ringsscrewed on the burner mouth piece.

The invention involves other features of importance which will be fullyset forth hereinafter and particularly pointed out in the claims.

Reference is had drawing in which Figure 1 is a side view of the mantlermg showing the mouth piece and mantle in broken lines, and

Fig. 2 is a plan view of the same.

a is the mouth piece of the Bunsen burner which is threaded to receivethe ceramic mantle holding ring Z1. This ring has lugs L to facilitatescrewing and unscrewing it from the mouth piece and threads 6 to matchthe threads of the mouth piece.

0 indicates openings or notches formed in the inner periphery of thering 6 which constitute air passages past the burner mouth piece a. (Zshows by broken lines the position of upper part of the inverted to theaccompanying mantle seized around the ring Z1 with the usual asbestoscord or indeed fastened in any other desired fashion.

Now according to my invention and the conventional incandescent lightpractice a certain amount of air is entrained at the Bunsen to form theBunsen mixture but it has been found in practice that an additionalquantity of air is beneficial to or enhances the attainment of theobject of making the mantle uniformly incandescent and thereby producinga perfect incandescent light. To provide this additional air I form theair ducts or notches c in the ring I) and the outgoing current of airfrom the mouth piece a forms a sort of injector action which draws inthe atmospheric air and intensifies the flame in the manner implied. Allof this is in addition to such atmospheric air as may be utilized at thesurface of the mantle (Z by the breaking gases escaping from the mantlethereof.

The invention, it will be noted, relates especially and particularly towhat are known as inverted mantles. These mantles constitute a certaingroup in the family of gas mantles and are usually made in a limp staterather than with the utilization of the well-known collodion process.

hat I claim is 1. An incandescent gas mantle ring carrying the mantle onits exterior circumference and having its interior circumferencefurnished with threads to screw on the Bunsen mouth piece, said interiorence having a notch or gap formed therein longitudinally of the mouthpiece and breaking the threads on the interior circumference of the ringwhich notch or opening permits the passage of air between the mouthpiece and ring to the interior of the mantle.

2. An incandescent rying the mantle on ence and furnished gas mantlering carits exterior circumferwith threads on its inner circumference toscrew on to the Bunsen mouth piece, said ring having a plurality ofopenings or notches on its inner circumference cutting the threads andfurnishing passages for atmospheric air to pass the burner mouth pieceto the interior of the mantle.

3. As an article of manufacture, an annular ceramic men her for carryingan incircumferoandescent gas mantle, said member being In testimonywhereof I have hereunto formed at one end with laterally extendingsigned my name in the presence or" two Wit- Q1) lugs and on its innercircumferential surnesses.

face with a screw thread and a number of 5 notches or gaps extending theentireheight JACOB ROBIN of said member and serving as airductsWitnesses: When said member is screwed onto the 7 PATRICK A. BoLGER,mouth piece of a Bunsen burner. ISAAC B. OWENS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

. Washington, D. 0.

